Schiff will play Harper Dearing, an eccentric international businessman who is no stranger to hobnobbing with the world's elite. However, as we previously reported

, he is haunted by the loss of his son, who died in a terrorist bombing some years ago. Perhaps he'll have an interesting perspective to offer the NCIS team?"I was a huge West Wing fan," executive producer Gary Glasberg tells TVGuide.com. "Richard Schiff is a brilliantly gifted actor and I'm thrilled he's joining us for this multi-episode storyline. The mysterious character of Harper Dearing is enormously complex and Richard will bring unexpected nuance to the part. This is a treat that will help propel us into the finale of what's been a tremendous season." In addition to appearing in Season 9's final episodes, Schiff may also play a part in next season's premiere.